Standardize Response Headers from all Adapters

Now, all adapters returns Array when response have more than on header. Used
"Set-Cookie" for example on tests. This commit, fix issue #69 and closes pull
request #52.
Merge pull request #72 from rogerleite/standardize_response_headers

Standardize Response Headers from all Adapters
implemented chunked response block handling
implemented chunk response for Net::HTTP
Net::HTTP backwards compat fix for ruby 1.8
response streaming doesn't currently work with em-synchrony
added note in integration spec
Merge pull request #71 from chetan/chunked_responses

Chunked responses
Updating Changelog
Fix tests on JRuby

Puma don't support SSL on JRuby.
For now, i'm just skipping this cases when platform is JRuby.
Hope, Travis be glad and green about this.
Rack adapter
Merge pull request #75 from inossidabile/rack_adapter

Rack adapter, perform internal direct middleware calls.
Adding Rack Adapter on Changelog
added ntlm support
Merge pull request #80 from coldnebo/master

ntlm support
Removing whitespaces
Changing link to httpi wiki
Standardize Response Headers from all Adapters

Now, all adapters returns Array when response have more than on header. Used
"Set-Cookie" for example on tests. This commit, fix issue #69 and closes pull
request #52.
Send client-side certificates (if present) regardless of the state of ssl verify_mode
preparing v2.0.1